Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture
Carbon capture is an important solution to address global warming and has significance for constructing an abundant, clean energy system. This work discusses a potential carbon capture approach with non-equilibrium condensation in subcritical state and supersonic flows. A numerical model is created...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-04-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X25001923 |
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| author | Zhiheng Wang Yuanyuan Gao Zhu Huang Jianan Chen |
| author_facet | Zhiheng Wang Yuanyuan Gao Zhu Huang Jianan Chen |
| author_sort | Zhiheng Wang |
| collection | DOAJ |
| description | Carbon capture is an important solution to address global warming and has significance for constructing an abundant, clean energy system. This work discusses a potential carbon capture approach with non-equilibrium condensation in subcritical state and supersonic flows. A numerical model is created to describe the complicated physical phenomena in supersonic flows. The mass and heat transfer and thermodynamic properties of CO2 in subcritical state are analyzed, the prediction difference of different models on supersonic flows are quantified, the effects of superheat and TW curve on condensation characteristics are explained, and suggestions are given to improve the carbon capture effect. Compared with the two-phase flow, the single-phase model misestimates the expansion state of system, and the prediction difference between the two models is as high as 15.1 %. The displacement of TW curve has varying degrees of impact on condensation characteristics such as nucleation and Wilson point, and the impact on peak nucleation rate is the most obvious. The inlet superheat is linearly correlated with the outlet liquid fraction and outlet droplet radius. The decrease in inlet superheat weakens the thermal motion of CO2 molecules, thereby weakening the non-equilibrium effect during condensation process. |
| format | Article |
| id | doaj-art-21a8a57d2eef4af1a28992c8eaf269c6 |
| institution | OA Journals |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-21a8a57d2eef4af1a28992c8eaf269c62025-08-20T01:57:40ZengElsevierCase Studies in Thermal Engineering2214-157X2025-04-016810593210.1016/j.csite.2025.105932Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon captureZhiheng Wang0Yuanyuan Gao1Zhu Huang2Jianan Chen3Xi’an Jiaotong University, School of Energy and Power Engineering, Department of Fluid Machinery and Engineering, Xi’an, 710049, ChinaXi’an Jiaotong University, School of Energy and Power Engineering, Department of Fluid Machinery and Engineering, Xi’an, 710049, ChinaXi’an Jiaotong University, School of Energy and Power Engineering, Department of Fluid Machinery and Engineering, Xi’an, 710049, ChinaCorresponding author.; Xi’an Jiaotong University, School of Energy and Power Engineering, Department of Fluid Machinery and Engineering, Xi’an, 710049, ChinaCarbon capture is an important solution to address global warming and has significance for constructing an abundant, clean energy system. This work discusses a potential carbon capture approach with non-equilibrium condensation in subcritical state and supersonic flows. A numerical model is created to describe the complicated physical phenomena in supersonic flows. The mass and heat transfer and thermodynamic properties of CO2 in subcritical state are analyzed, the prediction difference of different models on supersonic flows are quantified, the effects of superheat and TW curve on condensation characteristics are explained, and suggestions are given to improve the carbon capture effect. Compared with the two-phase flow, the single-phase model misestimates the expansion state of system, and the prediction difference between the two models is as high as 15.1 %. The displacement of TW curve has varying degrees of impact on condensation characteristics such as nucleation and Wilson point, and the impact on peak nucleation rate is the most obvious. The inlet superheat is linearly correlated with the outlet liquid fraction and outlet droplet radius. The decrease in inlet superheat weakens the thermal motion of CO2 molecules, thereby weakening the non-equilibrium effect during condensation process.http://www.sciencedirect.com/science/article/pii/S2214157X25001923Subcritical stateMass and heat transferThermodynamic propertiesNon-equilibrium condensationCarbon capture |
| spellingShingle | Zhiheng Wang Yuanyuan Gao Zhu Huang Jianan Chen Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture Case Studies in Thermal Engineering Subcritical state Mass and heat transfer Thermodynamic properties Non-equilibrium condensation Carbon capture |
| title | Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture |
| title_full | Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture |
| title_fullStr | Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture |
| title_full_unstemmed | Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture |
| title_short | Analysis and application: Non-equilibrium condensation of CO2 in supersonic flows and subcritical state serving carbon capture |
| title_sort | analysis and application non equilibrium condensation of co2 in supersonic flows and subcritical state serving carbon capture |
| topic | Subcritical state Mass and heat transfer Thermodynamic properties Non-equilibrium condensation Carbon capture |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X25001923 |
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